Poaching refuces a population of animals by 4% per year. When the population of tis animal fals below 60 it will become extinct. If the current population is 1700 when will it face extinction?

Q: During each hour, an exhaust fan removes 15.0% of carbon dioxide present in the air in a room at the…

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Q: Due to depreciation, the cost of a car decreases by 10.2% every year. How much is the estimated…

A: The solution is given below.

Q: During each hour, an exhaust fan removes 15.0% of the carbon dioxide present in the air in a room at…

A: Solution :  Given that  Decreasing rate  r = 15.0% = 15/100 = 0.15  Number of hours  n = 10.0 hours

Q: New Orleans averages 86% humidity in the mornings, but it decreases by 19% in the afternoon. What is…

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Q: You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by…

A: Given: You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system…

Q: An author published a book which was being sold online. The first month the author sold 3500 books,…

A: The no of books sold in months gives a Geometric progression

Q: A person buys a boat for $32,750. The boat loses value at a rate of 4.2% per year. What will the…

A: Given: The boat price is(Amount)=$32,750 Rate of interest(loses value)=4.2% To find: The value of…

Q: 5. Sarina is half as old as her mother. Twelve years ago, she was one-third of her mother's age.…

A:

Q: over a recent 4-day period, the number of commercial flights decreased by 7.36%. Assuming this trend…

A:

Q: There are 1,750,235 acres of forest.  One half percent of the forest is destroyed by pollution every…

A: Given :                   Decay :          y= a(1-r)x         a - initial amount before measuring…

Q: From its founding through 2015, the Rock and Roll Hall of Fame has inducted 303 groups or…

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Q: An earthquake measuring 6.4 on the Richter scale struck Japan in July 2007, causingextensive damage.…

A: The magnitude M of an earthquake is define as M = log Is where I is the intensity of the earthquake…

Q: The largest earthquake in a certain year was in the ocean that was recorded as an 8.0 on the Richter…

A:

Q: In​ 2000, the population of a city was 72​,000. The population had grown to 123​,000 by 2010. If…

A:

Q: In 1960, the earthquake with the largest death toll happened in Morocco. It registered a 5.8 on the…

A: Richter scale is a scale of number used to tell the power of the earthquakes. One important point to…

Q: A client weighed 95kg(kilograms) on the initial visit to the clinic. When the client reported for…

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Q: What is the average time a high school student studies each week? minutes

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Q: The half-life of Sodium-24 is 14.96 hours. If a sample contains 490 mg, how many mg will remain…

A: I am going to solve the given problem by using some simple calculus to get the required result.

Q: The half-life of the radioactive element krypton-91 is 10 seconds. If 16 grams of Question…

A: Given: Half life of Krypton-91 = 10 seconds Initial amount of Krypton-91 = 16 gm We have to find how…

Q: If 70 is decreased to 65.8, the decrease is what percent of the original number? (This is known as…

A:

Q: Anthony's annual income has been increasing each year by the same amount. The first year, his income…

A: Given that, Anthony's annual income has been increasing each year by the same amount. The first…

Q: The schools principal estimates that the current enrollment of 750 students will increase 5% each…

A:

Q: sone age keepsakes had $174,500 in sales last year, and spend $7,350 on advertising. What percent…

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Q: n investment (in dollars). (I per year and is worth $50,

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Q: In the 2000 U.S. Census, a small city had a population of 60,000. By the 2010, the population had…

A:

Q: A car retail store reduces prices by 15 percent each year until the cars are sold. What will a…

A: It is question of successive discount , which can be relate by compound interest annually . If we…

Q: The number of fish in a pond triples every 9 years. By what percent does the population change each…

A:

Q: When Melissa was two years old, she told her mother she wanted to have two children. When Melissa…

A: Given that When Melissa was 4 years old, she told her mother she wanted to have 2 children. At the…

Q: Approximately 430 000 birds were killed by wind turbines in a given country. It is estimated that…

A: Given information:It is given that; the approximate number of birds killed by wind turbines in a…

Q: An earthquake measuring 6.4 on the Richter scale struck Japan in July 2007, causing extensive…

A: Consider that the Japanese earthquake was x times more intense than the Pennsylvania eathquake.…

Q: In 2003, the median price of a house in a city was $135,000. Assuming a rate of increase of 5% per…

A:

Q: The population of the Norway doubled in the last 12 years from 1995 to 2007. Assuming the rate of…

A: According to question,Population of Norway doubled in 12 years from 1995 to 2007.

Q: A gift card loses 10% of its value every year. At the end of 10 years, what percent of the gift…

A: Given, a gift card loses 10% of its value every year. At the end of 10 years,

Q: An old antique 1937 Plymouth Sedan is worth $8000 currently and increases in value by 1.2% each…

A:

Q: You decide to invest $900 into an account where interest compounds annually. If the interest rate is…

A: At interest rate 5%, Money in the account after 2 years is $992.25.

Q: A factory could produce 84 toy robots in one day. They purchased some new equipment. Now they can…

A: Note: Let a number was previously x and then increases to y after some time. Then the percentage of…

Q: The population of Town C triples every 10 years. What is the annual percent change in the population…

A: Let the annual percentage change = x % Initial population = P Population after 10 years = 3P time =…

Q: The population of a town is 2,197 and it grows by 11% each year. What will the population be in 9…

A:

Q: Destiny's investment account was valued at $15,000 but then lost 17% of its value. What percent…

A: Destiny's investment account valued at $15000 => Initial value = 15000 Lost by 17% of its value.…

Q: What percent of the phones have a battery life less than 5 or greater than 5.5 hours?

A: As per instruction we have to solve part c.

Q: Approximately 490,000 birds were killed by wind turbines in a given country. It is estimated that…

A: Total number of birds killed in the first year = 490,000Now after ten year this was become…

Q: 5. Sarina is half as old as her mother. Twelve years ago, she was one-third of her mother's age.…

A: Given

Q: The population of cats on an island is currently 1500 and is increasing 5% each year. What will be…

A: Topic:- calculus

Q: A factory could produce 84 toy robots in one day. They purchased some new equipment. Now they can…

A:

Q: 80 is decreased to 48. What is percent decreased ?

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Q: percent

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Q: In July 2012, Instagram announced 80 million users of its photo sharing app. In September 2015,…

A: Answer

Q: The populatio ourity has Maricopa County population is approximately 3.817 million. If the…

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Q: In a recent year, wind machines in a country generated 185.8 billion kWh of electricity, enough to…

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Q: 13 Carlos is 4 times as old as Pablo. Sofia is 6 years younger than Carlos. Their total age is 66…

A:

Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.